China Sea Shell Petrochemical Co., Ltd. is a large Sino-foreign joint venture petrochemical enterprise, equally owned (50% each) by China National Offshore Oil Corporation Limited and Royal Dutch Shell Group. Based in the Guangdong-Hong Kong-Macao Greater Bay Area, it serves as a pivotal node in China’s national “14th Five-Year Plan” petrochemical industry layout and is explicitly supported as a major industrial platform under the “Outline for the Development of the Guangdong-Hong Kong-Macao Greater Bay Area.” The company’s core business covers the production and sale of basic chemical feedstocks—including ethylene, propylene, butadiene, benzene, toluene, and xylene—as well as high-value-added derivatives. Its products are widely applied across plastics, synthetic rubber, chemical fibers, coatings, pharmaceutical intermediates, and other sectors. The company operates within the “Advanced Petrochemical Materials” subsector—a strategic emerging industry designated by the Chinese government. Leveraging the integrated, large-scale, and intensive refining–chemicals coupling base, the company owns China’s largest single-train ethylene cracker unit (1.6 million tons/year, Phase III), globally leading Ultra-Selective Catalytic Cracking (USCC) technology, complete process technologies for bimodal polyethylene (Bimodal PE) and high-density polyethylene (HDPE), and an independently integrated intelligent factory system. It has secured over 200 state-authorized patents, more than 45% of which are invention patents; multiple proprietary technologies have been included in both the “Green Process Catalogue for Petrochemical Industry” and the Ministry of Industry and Information Technology’s (MIIT) Recommended List of Energy-Saving Technologies and Equipment. The company holds certifications for ISO 9001, ISO 14001, ISO 45001, and ISO 50001 management systems, as well as all statutory licenses—including the Safety Production License for Hazardous Chemicals and the Pollutant Discharge Permit—and has been recognized as an “Intelligent Manufacturing Demonstration Factory Candidate Unit” by MIIT, a “Single-Champion Enterprise in Manufacturing” by Guangdong Province, and a “Green Factory” by the China Petroleum and Chemical Industry Federation. Notable practices include commissioning China’s first Shell OCM ethane dehydrogenation-to-ethylene industrial demonstration plant; supplying customized high-end polyolefin products—such as automotive-grade polypropylene and lithium-ion battery separator resins—to CATL, BYD, and Kingfa Science & Technology; and participating in the formulation of five national standards and seven industry standards. Its business spans all 31 provinces, autonomous regions, and municipalities directly under the central government in China, with exports to Southeast Asia, South Asia, and the Middle East. It actively pursues deep collaboration with upstream and downstream industrial chain partners in areas including high-end material supply, low-carbon technology cooperation, coordinated development of CCUS (Carbon Capture, Utilization and Storage) and green hydrogen production via renewable electricity, intelligent factory construction, and co-development of technical standards.